Journal of Radioanalytical and Nuclear Chemistry
Volume/Issue:
Volume 52: Issue 1
Determination of228Th,230Th, and232Th in environmental samples from uranium mining and milling operations
Authors:
R. Durham Canada Centre for Inland Waters, Environment Canada National Water Research Institute P.O. Box 5050 L7R 4A6 Burlington Ontario (Canada)

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and
S. Joshi Canada Centre for Inland Waters, Environment Canada National Water Research Institute P.O. Box 5050 L7R 4A6 Burlington Ontario (Canada)

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Pages:
181–188
Online Publication Date:
09 Jan 2007
Publication Date:
01 Mar 1979
Article Category:
Research Article
DOI:
https://doi.org/10.1007/bf02517712
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Abstract  

A method is described for the determination of228Th,230Th, and232Th in environmental samples from uranium mining and milling operations. The analytical procedure is based on the direct determination of228Th in the sample by high resolution γ-spectrometry followed by extraction and purification of the thorium fraction using high molecular weight amines and an anion-exchange technique, respectively, prior to α-spectrometry to determine isotopic ratios. The lowest level of detection for each thorium isotope is 0.01 pCi/g for solid samples and 20 pCi/l for aqueous samples. Replicate analyses of a typical mine waste stream gave a standard deviation of ±3% for228Th. Standard deviations of the230Th and232Th increased to ±11% apparently due to traces of210Po interfering in the α-spectrometry.

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Cover Journal of Radioanalytical and Nuclear Chemistry
Journal of Radioanalytical and Nuclear Chemistry
Print ISSN:
0236-5731
Online ISSN:
1588-2780

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Journal of Radionalytical and Nuclear Chemistry
Language English
Size A4
Year of
Foundation		 1968
Volumes
per Year		 1
Issues
per Year		 12
Founder Akadémiai Kiadó
Founder's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 0236-5731 (Print)
ISSN 1588-2780 (Online)

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